Non-equilibrium thermodynamics of damped Timoshenko and damped Bresse systems

TL;DR

This paper reformulates damped Timoshenko and Bresse systems within the GENERIC framework, offering new thermodynamically consistent models and revealing their physical and geometrical structures.

Contribution

It introduces a GENERIC-based formulation for these systems, including a novel model for damped Timoshenko systems not previously documented.

Findings

Provides thermodynamically consistent models

Reveals physical and geometrical structures

Introduces a new GENERIC model for damped Timoshenko systems

Abstract

In this paper, we cast damped Timoshenko and damped Bresse systems into a general framework for non-equilibrium thermodynamics, namely the GENERIC (General Equation for Non-Equilibrium Reversible-Irreversible Coupling) framework. The main ingredients of GENERIC consist of five building blocks: a state space, a Poisson operator, a dissipative operator, an energy functional, and an entropy functional. The GENERIC formulation of damped Timoshenko and damped Bresse systems brings several benefits. First, it provides alternative ways to derive thermodynamically consistent models of these systems by construct- ing building blocks instead of invoking conservation laws and constitutive relations. Second, it reveals clear physical and geometrical structures of these systems, e.g., the role of the energy and the entropy as the driving forces for the reversible and irreversible dynamics respectively. Third, it allows us to introduce a new GENERIC model for damped Timoshenko systems that is not existing in the literature.